Going vegan: Weighing the risks and benefits

Whether you do it for health reasons or moral beliefs, there’s no doubt about it – lots of people are going vegan these days. But there are things to consider before writing off animal products completely.

We got this email from a curious viewer:

Dear Dr. Manny, Is there a downside to going vegan? Thanks, Brian

A vegan diet includes only plant-based foods – no eggs, dairy or animal products of any kind.

Studies have shown that vegans tend to have lower body mass indexes (BMIs) and a reduced risk of diabetes, heart disease and cancer. But they are also more vulnerable to nutritional deficiencies including:

B12

Omega-3 fatty acids

Vitamins A & D

Iron

Zinc

Calcium

All of these vitamins and nutrients are vital for regulating energy and mood – among other important functions – so vegans should be sure to eat a lot of foods like:

Fruits and vegetables

Whole grains

Legumes

Nuts

Seeds

Beans

If you’re thinking about going vegan, talk to your doctor and/or a nutritionist first and follow up with them if you need to make adjustments to your diet.

Do you have a health question for Dr. Manny? Send it to DrManny@foxnews.com.

Dr. Manny Alvarez serves as Fox News Channel's senior managing health editor. He also serves as chairman of the department of obstetrics/gynecology and reproductive science at Hackensack University Medical Center in New Jersey. Click here for more information on Dr. Manny's work with Hackensack University Medical Center. Visit AskDrManny.com for more.